The worst for me pre-sleep was the Xanax (again, from Airsealed).
It got me sleepy enough to "sleep" but I spent the night in a sort of semi-awake zombie state. Not conscious but just enough to know that I wasn't fully asleep.
Spent 7 hours like this and had the worst day of my life the next day in terms of grogginess, etc.
No one said benzodiazepines would produce good quality sleep. It is well known that they have a detrimental effect on sleep structure. They simply allow you to fall asleep when you otherwise would not be able to due to stress or excessive mental activity / stimulation around bedtime. If your girlfriend broke up with you and you were freaking out, or your dog died, and you still needed to get some rest for work the next day, that is the kind of situation you use a benzo for. Or maybe you foolishly drank 3 cups of coffee at 10pm, and need a sedating agent to counteract the caffeine. It seems like you are attempting to use it for other reasons, not as the short-term / emergency use that is recommended.
If the Xanax "got you sleepy", its working -- you may not get the effects you were hoping for, but that's a matter of individual response. Airsealed's xanax is definitely not bunk (again, I haven't tried their other benzo products so I can't comment there).